Document Type

Article

Publication Date

9-11-2015

Publication Source

Ichnos: An International Journal for Plant and Animal Traces

Volume

22

Inclusive pages

235–260

DOI

10.1080/10420940.2015.1064408

Publisher

Taylor & Francis Group, LLC

ISBN/ISSN

1042-0940 print / 1563-5236 online

Abstract

Literature concerning dinosaur footprints or trackways exhibiting abnormal gait or morphology reflecting pathology (ichnopathology) is rare. We report on a number of Jurassic and Cretaceous occurrences of theropod footprints from western North America with unusual morphologies interpreted herein as examples of inferred pathologies, or ichnopathologies. The majority of ichnopathologies are primarily manifested in the digit impressions and include examples of swelling, extreme curvature, dislocation or fracture, and amputation. A number of occurrences are single tracks on ex situ blocks with substantial deformation (inferred dislocation or fracture), or absence of a single digit impression. Two occurrences are from in situ natural mould trackways, one of which is a lengthy trackway of a presumed allosauroid with no noticeable deformation of the digits or feet but with strong inward rotation of the left footprint toward the midline and a pronounced, waddling limp. The other is a tyrannosaurid trackway consisting of three footprints (one right, two left) with the two left prints exhibiting repetitive ichnopathology of a partially missing Digit II impression.

Keywords

Dinosaur tracks, Amputation, Antalgic gait, Compensated gait, Jurassic, Cretaceous, Ichnopathology, Laterality, Irregular gait, Limping gait, Shuffling gait, Waddling gait

Disciplines

Biology | Geology

Share

COinS